Chrysler and Jeep Diesels
2006
(From Chrysler releases, provided by Doug Hetrick)
The Jeep Grand Cherokee, Jeep Commander, and Chrysler 300C are available with a new 3-liter V6 common-rail diesel from Mercedes, featuring 2,000+ bar Bosch fuel injection, a variable geometry turbocharger, and four valves per cylinder; it meets Euro 4 standards without a particulate filter (though one is provided on the 300C). Maximum power is 160 kW (218 hp DIN) and peak torque is 510 N.m (376 lb.-ft.) from just 1800 rpm. The engine is mated to a Mercedes W5A580 automatic transmission, and weighs 208 kg / 459 lb. Fuel consumption with the 300C is 8.1 L/100 km, EU standard for sedan (8.3 for touring).
The PT Cruiser also gets a variable geometry turbo, measuring 2.2 liters, now generating 110 kW (150 hp) with the same gas mileage as the previous, less powerful unit (6.7 L/100 km, combined cycle). Maximum torque of 300 Nm (221 lb.-ft) is produced from 1600 rpm to 3000 rpm. Matched to a five-speed manual transmission, this engine reduces the 0-to-100 km/h acceleration time from 12.1 seconds in the previous model to 10.8 seconds (estimated). The engine is an advanced common-rail design, which is Euro 4 compliant for exhaust emissions. It is also a refined power unit with reduced high-frequency combustion noise compared with the previous diesel engine.
Horsepower ratings may vary from country to country and year to year. Lars noted that the 2005 2.5 VM engine is also sold with 120 hp (“negative chip tuning”).
2003-2005 (thanks, Doug Hetrick)
| Years | Model | Engine | Transmission | HP (kW) | lb-ft (Nm) | C/R | mpg city / hway/ combined |
Top Speed / 0-60 |
| 2003-2005 | PT Cruiser | 2.2 liter Mercedes | 5-speed | 121 (84) | 221 (300) | 18:1 | 26 / 42 / 34 | 114 mph / 12.1 sec |
| 2003-2005 | Voyager | VM Motori 2.5* | 5-speed | 143 (105) | 251 | 28.5 / 44 / 37 | 115 / 11.9 | |
| 2005 | Voyager | VM Motori 2.8 | 4-speed auto | 150 | 265 | 17.5:1 | 25 / 33 / 29 | 112 / 12.0 |
| 2005 | Grand Voyager | VM Motori 2.8 | 4 speed auto | 150 | 265 | 17.5:1 | 25 / 32 / 29 | 112 / 12.0 |
| 1987-1993 | Cherokee | Renault 2.1 | 85 | 115 | 26 / 32 / na | |||
| 1992-2001 | Voyager | VM 2.5* | 5 speed | 115 | 221 (300) | |||
| 1994-2001 | Cherokee / Gr. Cher. | VM 2.5 | 5 speed | 115 | 221 (300) | |||
| 2003-2005 | Cherokee Sport | VM 2.5 | 5 speed | 141 | 251 | 17.5:1 | 24 / 38 / 31 | na / 13.5 |
| 2004-05 | Cherokee 4x4 | VM 2.8 VGT | 5 speed auto | 148 | 266 | 17.5:1 | 22/34/28.5 | na / 12.6 |
| 2002-04 | Grand Cherokee | MB 2.7 I-5 | 5 speed auto | 161 | 295 | 18:1 | 23/35/29 | na / 11.2 |
| 1999-2001 | Jeeps | Detroit Diesel/VM 3.1 | 4 speed auto | 140 (104) | 271 (367) | Combined, 11,7 l/100km (QuadraDrive) |
170 km/h | |
| 1978-? | Dodge trucks | Mitsubishi 3.9 | A-727 3-speed auto | 105 | 170? | 20+ highway? |
* 1992-1995 in Model ES with timing gears; 1996-1998 in Model GS with chains; 1999-2000 in Model GS with timing gears
1999-2001
Chrysler brought out several new diesel engines for export markets in 1999 and we expect 2001. The 2.5 will be used in minivans and Jeeps, the 1.9 in cars, and the 3.1 in Jeeps.
The 1.9 and 2.5 liter engines will be direct-injected four-valve turbodiesels, and are due in 2001 and 1999, respectively. They include common rail fuel injectors and will meet Euro III emissions standards.
The 3.1 liter turbo Diesel has five cylinders and will also meet Euro III. All are being designed to have better gas mileage, performance, and noise, vibration, and harshness levels than current engines.
Common features of the new diesels
Development is being shared with a number of companies, and is based on computer design and modeling systems.
Common Rail Fuel Control (CR) uses a high-pressure pump to achieve the highest injection pressures - 1,500 bar - available in a diesel fuel injection system. This means better spray atomization and fuel mixing for cleaner, more efficient combustion - better fuel economy and reduced emissions. CR also maintains these pressures throughout the engine's full speed range, unlike conventional systems in which the pressure typically drops at low speeds.
Pilot injection offers a tremendous noise advantage. It's a fuel spray which precedes the main spray to initiate combustion, made possible because of the precise electronic control CR makes available at each injector. This precise control also means exact timing of each injector for optimum performance and minimum emissions.
Four valve direct injection offers greatly increased power and responsiveness, up to 15 percent better fuel efficiency than indirect injection, and optimum positioning of the fuel injector for improved combustion characteristics. Direct injection is most efficient when the injector is centrally located for symmetrical fuel spray and the best fuel-air contact. This is only possible in a multi-valve engine, since with two-valves per cylinder the injector location must be offset.
Cooled EGR (optional) enhances the emission-controlling benefits of conventional EGR systems by cooling the recirculated exhaust gases before blending them with the intake air.
Swirl Control (optional) at the cylinder head intake matches the air motion in the combustion chamber with the needs of the engine under any operating condition and without sacrificing the amount of flow. It is achieved by designing one port tangentially for maximum flow while the other is designed to induce swirl, or turbulence, to air entering the combustion chamber based on engine load and speed.
2.5 liter turbodiesel engine for Voyager, Cherokee, Grand Cherokee
Due in 2001, this will replace the current 2.5 litre in the Voyager, Cherokee, and Grand Cherokee. It will feature balance shafts for reduced vibration, as do the gas-powered 2.5 and 2.4 liter four-cylinder Mopar engines.
It is being developed in cooperation with VM Motori of Italy.
Gas mileage is expected to be 15% better than the current 2.5 Diesel, with more power. Contributing to this are a variable geometry turbocharger (VGT) for quick response at lower speeds, a cooled exhaust gas recirculation (EGR) system for enhanced emissions reductions, and swirl control for cleaner, more efficient combustion.
| Vehicle: | Future minivans and sport-utilities |
| Manufactured: | Cento, Italy - co-developed with Detroit Diesel/VM Motori |
| Volume: | 20,000 a year |
| Why: | To reduce CO2 emissions through increased efficiency and to meet very low European Stage III exhaust emission levels |
| Market: | European right-and left-hand drive |
| Emissions: | European stage III |
| Fuel Consumption: | Projected to be 15 percent more efficient compared to current technology 2.5-litre diesel, while delivering a 10 percent increase in power |
| Displacement: | 2,499cc |
| Power: | 104 kW/140 bhp |
| Torque: | 320N-m/236 lb-ft |
| Transmission: | Five speed manual |
1.9 liter Detroit Diesel / FEV Engine Technology diesel engine
The 1.9 is being developed with both Detroit Diesel and FEV Engine Technology.
Volume production began in June 1999 for cars. It can meet proposed EURO IV levels, thanks to centrally located fuel injectors, direct injection, four valves per cylinder, common rail fuel injection; electronic EGR; turbocharging, and a special catalyst to control oxides of nitrogen (NOx).
The 1.9 will be capable of having balance shafts if Chrysler desires.
| Manufactured: | Saltillo, Mexico, - co-developed with Detroit Diesel |
| Volume: | 25,000 - 30,000 a year |
| Market: | European left-and right-hand drive |
| Emissions: | European stage III |
| Mileage: | 5.3 l/100km combined for small vehicles, 5.7 litres/100km combined for mid-size vehicles |
| Displacement: | 1,896cc |
| Power: | 86 kW/115 bhp w/intercooler, 67 kW/90 bhp w/o intercooler |
| Torque: | 230 N-m/170 lb-ft w/intercooler, 179 N-m/132 lb-ft w/o intercooler |
| Transmission: | Five speed manual only |
| Graphic: |  |
3.1 liter diesel engine for Jeep Grand Cherokee (Detroit Diesel/VM Motori)
The 3.1 litre turbo-diesel on the 1999 Grand Cherokee was developed in conjunction with Detroit Diesel/VM Motori. It has an electronic injection pump, electronically-controlled, vacuum-actuated exhaust gas recirculation, and a special catalyst to control oxides of nitrogen (NOx).
| Manufactured: | Cento, Italy - co-developed with Detroit Diesel/VM Motori |
| Volume: | 13,000 a year |
| Why: | To offer a high efficiency, low emission powertrain for sport-utility vehicles into the next century |
| Market: | European left-and right-hand drive |
| Emissions: | European stage III |
| Fuel Consumption: | A 30 percent increase over the gasoline engine it replaces |
| Displacement: | 3,124cc |
| Power: | 104 Kw/140 bhp |
| Torque: | 367 Nm/271 lb-ft |
| Transmission: | Four speed electronically controlled automatic |
Duane Watters wrote: “In the early 1970s Chrysler used a Isuzu diesel in the the truck line. It was rare and I have only seen one, it was in a 1974 W100 shortbox truck.” We were unable to verify this, but did find a Mitsubishi diesel used in 1978 (and possibly later) D150s, D250s, and Power Wagons. This was the Mitsubishi 6DR5, 3950 cc, with 105 hp at 3500 rpm; it was reportedly virtually identical to the Land Cruiser diesel engine of the time; it was a factory option. A Mitsu diesel, probably the same one, was also custom-fitted into a few pre-1978 Dodge trucks as a publicity tool.
Cummins engines didn’t get into Dodge Rams until 1989 (see the Ram history page).
